linux-kernel - Re: [PATCH 1/3] x86-32: Separate 1:1 pagetables from swapper_pg

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Message-ID: <20110119155235.GA26134@dumpdata.com>
Date:	Wed, 19 Jan 2011 10:52:35 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Borislav Petkov <bp@...en8.de>,
	Joerg Roedel <joerg.roedel@....com>, Greg KH <greg@...ah.com>,
	Borislav Petkov <bp@...64.org>, linux-kernel@...r.kernel.org,
	stable@...nel.org, Borislav Petkov <borislav.petkov@....com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 1/3] x86-32: Separate 1:1 pagetables from swapper_pg_dir

On Wed, Jan 19, 2011 at 08:19:44AM +0100, Borislav Petkov wrote:
> On Tue, Jan 18, 2011 at 07:39:08PM -0500, Konrad Rzeszutek Wilk wrote:
> > On Thu, Nov 11, 2010 at 02:56:13PM +0100, Joerg Roedel wrote:
> 
> [..]
> 
> > > -v2: switch to swapper_pg_dir right after entering start_secondary() so
> > > that we are able to access percpu data which might not be mapped in the
> > > trampoline page table.
> > 
> > You also might want to look at the regression this patch caused when it
> > was introduced. Mainly this fix:
> > 805e3f495057aa5307ad4e3d6dc7073d4733c691
> 
> I think you mean the regression _this_
> b40827fa7268fda8a62490728a61c2856f33830b patch caused, which is not in
> -stable anyway.

Duh. Saw 'initial_page_table' and immediately jumped to conclusions.
Thank you for clarifying.
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